Comparative antioxidant activity of extracts from leaves, bark and catkins of Salix aegyptiaca sp.

Enayat S., BANERJEE S.

FOOD CHEMISTRY, cilt.116, sa.1, ss.23-28, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 116 Sayı: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.foodchem.2009.01.092
  • Dergi Adı: FOOD CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.23-28
  • Anahtar Kelimeler: Salix aegyptiaca, Phenol, Flavonoid, Antioxidant, Salicin, HPLC, PERFORMANCE LIQUID-CHROMATOGRAPHY, IN-VITRO, PHENOLIC PHYTOCHEMICALS, CANCER CELLS, CAPACITY, APOPTOSIS, CATECHIN, ASPIRIN, GROWTH, COLON
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Leaves, bark and catkins of Salix aegyptiaca L were extracted into solvents of increasing polarity from cyclohexane (non-polar), butanol, ethanol and water (polar) and analysed for their antioxidant capacity, total phenol and flavonoids. The highest antioxidant activity (19 mu g/ml IC50 for inhibition of DPPH radical activity), total phenolic content (212 mg gallic acid equivalents/g of dried extract) and total flavonoid (479 mg catechin equivalents/g of dried extract) was observed in the ethanolic extract of bark. HPLC identification of phenolic compounds from the extracts indicated the presence of gallic acid, caffeic acid, vanillin and p-coumaric acid, myricetin, catechin, epigallocatechin gallate, rutin, quercetin as well as salicin. Our data indicates the presence of high amounts of phenols and flavonoids in different parts of S. aegyptiaca species and propose that extracts from this plant may be Utilised as a source of health promoting antioxidants. (C) 2009 Elsevier Ltd. All rights reserved.